package com.atguigu.gulimall.product.service.impl;

import com.atguigu.common.constant.ProductConstant;
import com.atguigu.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.dao.CategoryDao;
import com.atguigu.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.entity.CategoryEntity;
import com.atguigu.gulimall.product.service.CategoryService;
import com.atguigu.gulimall.product.vo.AttrGroupRelationVo;
import com.atguigu.gulimall.product.vo.AttrRespVo;
import com.atguigu.gulimall.product.vo.AttrVo;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.AttrDao;
import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

    @Autowired
    AttrAttrgroupRelationDao attrgroupRelationDao;

    @Autowired
    AttrGroupDao attrGroupDao;

    @Autowired
    CategoryDao categoryDao;

    @Autowired
    CategoryService categoryService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public void saveAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr,attrEntity);
        //1、保存基本数据
        this.save(attrEntity);
        //2、保存关联关系
        if (attr.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() && attr.getAttrGroupId()!=null){
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attr.getAttrId());
            attrgroupRelationDao.insert(relationEntity);
        }

    }

    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId, String attrType) {

        QueryWrapper<AttrEntity> queryWrapper= new QueryWrapper<AttrEntity>().eq("attr_type","base".equalsIgnoreCase(attrType)?ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode():ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());
        if (catelogId !=0){
            queryWrapper.eq("catelog_id",catelogId);
        }
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)){
            queryWrapper.and((wrapper)->{
                wrapper.eq("attr_id",key).or().like("attr_name",key);
                    });
        }
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),queryWrapper

        );
        PageUtils pageUtils = new PageUtils(page);

        List<AttrEntity> records = page.getRecords();
        List<AttrRespVo> respVos = records.stream().map((attrEntity)->{
            AttrRespVo  attrRespVo = new AttrRespVo();
            BeanUtils.copyProperties(attrEntity,attrRespVo);
            if ("base".equalsIgnoreCase(attrType)){
                AttrAttrgroupRelationEntity relationEntity = attrgroupRelationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
                if (relationEntity !=null && relationEntity.getAttrGroupId()!=null){
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(relationEntity.getAttrGroupId());
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
            CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
            if (categoryEntity!=null) {
                attrRespVo.setCatelogName(categoryEntity.getName());
            }
            return  attrRespVo;
                }
        ).collect(Collectors.toList());

        pageUtils.setList(respVos);
        return pageUtils;
    }

    @Override
    public AttrRespVo getAttrInfo(Long attrId) {
        AttrRespVo respVo = new AttrRespVo();
        AttrEntity attrEntity = this.getById(attrId);
        BeanUtils.copyProperties(attrEntity,respVo);
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()){
            //    1.设置分组信息
            AttrAttrgroupRelationEntity relationEntity = attrgroupRelationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id",attrId));
            if (relationEntity != null){
                respVo.setAttrGroupId(relationEntity.getAttrGroupId());

                AttrGroupEntity attrGroup = attrGroupDao.selectOne(new QueryWrapper<AttrGroupEntity>().eq("attr_group_id", relationEntity.getAttrGroupId()));
                if (attrGroup !=null){
                    attrGroup.setAttrGroupName(attrGroup.getAttrGroupName());
                }
            }

        }


//        2.设置分类信息
        Long catelogId = attrEntity.getCatelogId();
        Long[] catelogPath = categoryService.findCatelogPath(catelogId);
        respVo.setCatelogPath(catelogPath);
        CategoryEntity categoryEntity = categoryDao.selectById(catelogId);
        if (categoryEntity!=null) {

            respVo.setCatelogName(categoryEntity.getName());
        }

        return respVo;
    }

    @Transactional
    @Override
    public void updateAttr(AttrVo attrVo) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attrVo,attrEntity);
        this.updateById(attrEntity);
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            AttrAttrgroupRelationEntity attrAttrgroupRelation = new AttrAttrgroupRelationEntity();
            attrAttrgroupRelation.setAttrId(attrVo.getAttrId());
            attrAttrgroupRelation.setAttrGroupId(attrVo.getAttrGroupId());

            Integer count = attrgroupRelationDao.selectCount(new UpdateWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrVo.getAttrId()));
            if (count > 0) {
                attrgroupRelationDao.update(attrAttrgroupRelation, new UpdateWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrVo.getAttrId()));
            } else {
                attrgroupRelationDao.insert(attrAttrgroupRelation);
            }
        }
    }

    @Override
    public List<AttrEntity> getRelationAttr(Long attrgroupId) {

        List<AttrAttrgroupRelationEntity> entities = attrgroupRelationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id", attrgroupId));
        List<Long> attrIds = entities.stream().map(
                (attr) -> {
                    return attr.getAttrId();
                }
        ).collect(Collectors.toList());

        if (attrIds ==null || attrIds.size()==0){
            return null;
        }

        Collection<AttrEntity> attrEntities = this.listByIds(attrIds);

        return (List<AttrEntity>) attrEntities;
    }

    @Override
    public void deleteRelation(AttrGroupRelationVo[] vos) {
        List<AttrAttrgroupRelationEntity> entities = Arrays.asList(vos).stream().map(
                (item) -> {
                    AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
                    BeanUtils.copyProperties(item, relationEntity);
                    return relationEntity;
                }
        ).collect(Collectors.toList());

        attrgroupRelationDao.deleteBatchRelation(entities);
    }

    /**
     * 获取当前分组没有关联的所有属性
     * @param params
     * @param attrgroupId
     * @return
     */
    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
        //1.当前分组只能关联自己所属的分类里面的所有属性
        AttrGroupEntity relationEntity = attrGroupDao.selectById(attrgroupId);
        Long catelogId = relationEntity.getCatelogId();
        //2.当前分组只能关联别的分组没有引用的属性
        //2.1).当前分类下的其他分组
        List<AttrGroupEntity> attrGroupEntities = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        //2.2).这些分组关联的属性
        List<Long> collect = attrGroupEntities.stream().map(
                (attrGroupEntity) -> {
                    return attrGroupEntity.getAttrGroupId();
                }
        ).collect(Collectors.toList());

        List<AttrAttrgroupRelationEntity> groupId = attrgroupRelationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));

        List<Long> attrIds = groupId.stream().map(attrAttrgroupRelationEntity -> {
            return attrAttrgroupRelationEntity.getAttrId();
        }).collect(Collectors.toList());
        //2.3).从当前分类的所有属性中移除这些属性
//        List<AttrEntity> entities = this.baseMapper.selectList(new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).notIn("attr_id", attrIds));
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).eq("attr_type",ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if (attrIds!=null&&attrIds.size()>0){

            wrapper.notIn("attr_id",attrIds);
        }
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)){
            wrapper.and((w)->{
                w.eq("attr_id",key).or().like("attr_name",key);
            });
        }

        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);
        PageUtils pageUtils = new PageUtils(page);


        return pageUtils;
    }

}